IBM HS20 User Guide - Page 26
System, board, illustration, System-board, locations - blade
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UPC - 087944983033
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System board illustration The following illustration shows the system-board components, including connectors for user-installable options, for the blade server. Battery Control panel connector (J64) IDE connector 1 (J13) Blade expansion connector (J8) I/O expansion option connector (J34) IDE connector 2 (J62) Microprocessor socket 2 and heat sink filler (U70) Microprocessor 1 and heat sink (U66) I/O expansion option connector (J9) DIMM socket 1 (J1) DIMM socket 2 (J5) DIMM socket 3 (J2) DIMM socket 4 (J6) Note: The blade expansion connector (J8) requires a terminator unless an expansion option is connected to it. System-board LED locations The following illustration shows the LEDs on the system board for the BladeCenter HS20 blade server. Refer to this illustration when solving problems with the blade servers. You have to remove the blade server from the BladeCenter unit, open the cover, and press the light path diagnostics button to light any error LEDs that were turned on during processing. Note: Power is available to relight the light path diagnostics LEDs for a short period of time after the blade server is removed from the BladeCenter unit. During that period of time, you can relight the light path diagnostics LEDs for a maximum of 25 seconds (or less, depending on the number of LEDs that are lit and the length of time the blade server is removed from the BladeCenter unit) by pressing the light path diagnostics button. The light path diagnostics power present LED (CR111) lights when the light path diagnostics button is pressed if power is available to relight the blade-error LEDs. If the light path diagnostics power present LED does not light when the light path diagnostics button is pressed, no power is available to light the blade-error LEDs, and they will be unable to provide any diagnostic information. 12 BladeCenter HS20 Type 8832: Installation and User's Guide
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